<template>
    <el-container class="home-container">
        <el-header>
            <div class="logo">
                <img src="../assets/heima.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type='info' @click="logout">退出</el-button>
        </el-header>
        <el-container>
            <el-aside :width="iscollapse ? '64px' : '200px' ">
                <div class="toggle" @click="toggleCollapse">|||</div>
                <el-menu background-color="#333744" text-color="#fff" router
                    active-text-color="#409eff" unique-opened :collapse='iscollapse' :collapse-transition='false'
                    :default-active='activePath'>
                    <el-submenu :index="item.id + ''"  v-for="item in menulist" :key="item.id">
                        <!-- 一级菜单 -->
                        <template slot="title">
                            <i :class="iconsObj[item.id]"></i>
                            <span>{{item.authName}}</span>
                        </template>
                        <!-- 二级菜单 -->
                        <el-menu-item :index="'/' + subItem.path" @click="saveNavState('/' + subItem.path)" v-for="subItem in item.children" :key="subItem.id">
                            <i class="el-icon-menu"></i>
                            <span>{{subItem.authName}}</span>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
export default {
    data() {
        // 左侧菜单数据
        return {
            menulist: [],
            iconsObj: {
                '125': 'iconfont icon-users',
                "103": 'iconfont icon-tijikongjian',
                '101': 'iconfont icon-lock_fill',
                '102': 'iconfont icon-danju',
                '145': 'iconfont icon-baobiao'
            },
            iscollapse: false,
            // 被激活的链接地址
            activePath: ''
        }
    },
    created() {
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
        logout() {
            window.sessionStorage.clear()
            this.$router.push('/login')
        },
       // 获取所有的菜单
       async getMenuList() {
          const { data: res } = await this.$http.get('menus')
          if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
          this.menulist = res.data
        },
        toggleCollapse() {
            this.iscollapse = !this.iscollapse
        },
        // 保存连接的激活状态
        saveNavState(activePath) {
            window.sessionStorage.setItem('activePath', activePath)
        }
    }
}
</script>

<style lang="less" scoped>
    .el-header{
        background: #373d41;
        display: flex;
        justify-content: space-between;
        padding: 0;
        align-items: center;
        color: #fff;
        font-size: 20px;
        .logo {
            display: flex;
            align-items: center;
            span {
                margin-left: 15px;
            }
        }
    }
    .el-aside{
        background: #333744;
        .el-menu {
            border-right: none;
        }
    }
    .el-main{
        background: #eaedf1;
    }
    .home-container{
        height: 100%;
    }
    .iconfont {
        margin-right: 10px;
    }
    .toggle {
        background: #4a5064;
        font-size: 10px;
        text-align: center;
        line-height: 24px;
        color: #fff;
        letter-spacing: 2px;
        cursor: pointer;
    }
</style>
